Screw fixing component

Abstract

The present invention discloses a screw fixing assembly, which includes a screw rod, a nut, a fixing pin and a positioning piece. At least one first concave groove is axially provided on the surface of the rod body of the screw rod, and at least one first thread segment is formed on the circumferential surface where the first concave groove is not provided. At least one second concave groove is axially provided on the inner ring surface of the nut; at least one second thread segment is formed on the inner ring surface where the second concave groove is not provided. The second concave groove corresponds to the first concave groove and jointly forms a clamping space; the fixing pin is used to be embedded in the clamping space. The positioning piece includes a first side, a second side and a third side. The two ends of the first side are respectively connected to the second side and the third side. The inner edges of the second side and the third side facing each other respectively protrude inward to form convex parts, and the convex parts are adapted to the first concave groove. Therefore, after the screw rod is screwed into the nut, the first concave groove of the screw rod and the second concave groove of the nut jointly form a clamping space, and by embedding the fixing pin into the clamping space, the screw rod and the nut are locked together.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and in particular to a screw fixing assembly. Background Art

[0002] Generally, the locking of a screw and a nut is achieved by the mutual engagement of the externally threaded and internally threaded portions provided thereon. However, since the locking and positioning of the screw and the nut are only through the thread engagement between them, if there is vibration or external force, it is very easy to cause loosening between the screw and the nut; in addition, when the length of the screw is relatively long, the distance for the screw to be locked into the nut is long and the time spent on screwing is also long. This situation is quite time-consuming and laborious for large-area construction and is not conducive to industrial development.

[0003] In view of the above-mentioned defects generated when the traditional screw and nut are locked, the inventor has developed the screw fixing assembly of the present invention. Summary of the Invention

[0004] To solve the above-mentioned defects generated when the traditional screw and nut are locked, the present invention provides a screw fixing assembly, which is realized by the following technology:

[0005] The screw fixing assembly provided by the present invention includes a screw, a nut, a fixing pin and a positioning piece;

[0006] The screw has a head and a rod body connected to the bottom surface of the head. At least one first concave groove is axially provided on the circumferential surface of the rod body, and at least one first thread segment is formed on the circumferential surface where the first concave groove is not provided. The first thread segment includes a first peak and a first valley;

[0007] At least one second concave groove is axially provided on the inner circumferential surface of the nut, and at least one second thread segment is formed on the inner circumferential surface where the second concave groove is not provided. The second thread segment includes a second peak and a second valley. The second thread segment is cooperatively screwed with the first thread segment, and the second concave groove corresponds to the first concave groove and jointly forms a locking space;

[0008] The fixing pin is a round rod body and is used for being embedded in the locking space;

[0009] The positioning piece includes a first side, a second side and a third side. The two ends of the first side are respectively connected to the second side and the third side. The positioning piece is a horseshoe-shaped sheet body. The inner edges of the second side and the third side facing each other respectively protrude inwards to form convex portions. The convex portions are adapted to the first concave groove. The distance between the inner edges of the second side and the third side facing each other is less than the outer diameter of the first peak of the first thread segment, and the distance between the inner edges of the second side and the third side facing each other matches the inner diameter of the first valley of the first thread segment.

[0010] In the screw fixing assembly of the present invention, two first concave grooves are provided on the circumferential surface of the rod body of the screw rod at equal intervals. A first thread section is formed on the circumferential surface between the two first concave grooves, and the two first thread sections are arranged at equal intervals. The inner ring surface of the nut is correspondingly provided with two second concave grooves at equal intervals. A second thread section is formed on the inner ring surface between the two second concave grooves, and the two second thread sections are arranged at equal intervals. In the screw fixing assembly of the present invention, a hole is provided on the convex part.

[0011] In the screw fixing assembly of the present invention, three first concave grooves are provided on the circumferential surface of the rod body of the screw rod at equal intervals. A first thread section is formed on the circumferential surface between two adjacent first concave grooves, and the three first thread sections are arranged at equal intervals. The inner ring surface of the nut is correspondingly provided with three second concave grooves at equal intervals. A second thread section is formed on the inner ring surface between two adjacent second concave grooves, and the three second thread sections are arranged at equal intervals.

[0012] In the screw fixing assembly of the present invention, a perforation penetrating the head is provided on the head of the screw rod, and the perforation corresponds to the first concave groove.

[0013] Effects of the present invention:

[0014] 1. In the screw fixing assembly of the present invention, when the screw rod is inserted into the nut, the first thread section of the screw rod can correspond to the second concave groove of the nut where no thread is provided, and the first concave groove of the screw rod where no thread is provided corresponds to the second thread section of the nut, so that the screw rod can move quickly in the nut without being blocked. Until reaching the locked height, rotate the screw rod so that the first thread section of the screw rod corresponds to and engages with the second thread section of the nut, and lock and position the screw rod and the nut.

[0015] 2. In the screw fixing assembly of the present invention, after the screw rod is inserted into the nut, insert the fixing pin into the clamping space jointly formed by the first concave groove and the second concave groove, which can ensure the locking state between the screw rod and the nut and prevent it from loosening easily.

[0016] 3. In the screw fixing assembly of the present invention, further through the setting of the positioning piece, first insert a plurality of screw rods into the nuts respectively initially. After reaching the required height, insert the positioning piece from the first valley of the first thread section of the screw rod until the convex part is stuck in the first concave groove, then position the positioning piece on the screw rod. At the same time, the bottom surfaces of the first side to the third side of the positioning piece also abut against the top end surface of the nut, so that the screw rod is supported by the positioning piece. After all the screw rods are roughly inserted into the respective nuts at appropriate lengths, then screw the screw rods into the nuts one by one to lock and position, thereby shortening the locking time. Description of the drawings

[0017] Figure 1 : Exploded perspective view of the screw-fastening assembly of the present invention.

[0018] Figure 2 : Perspective view of the screw of the present invention passing through the nut.

[0019] Figure 3 : Side view of the screw of the present invention passing through the nut and being able to move up and down.

[0020] Figure 4 : Top view of the screw of the present invention passing through the nut and being able to move up and down.

[0021] Figure 5 : Perspective view of the positioning piece being inserted onto the screw after the screw of the present invention passes through the nut to the desired height.

[0022] Figure 6 : Perspective view of the positioning piece being inserted onto the screw after the screw of the present invention passes through the nut to the desired height.

[0023] Figure 7 : Side view of the positioning piece inserted onto the screw.

[0024] Figure 8 : Top view of the positioning piece inserted onto the screw.

[0025] Figure 9 : Perspective view of another embodiment of the positioning piece being inserted onto the screw after the screw of the present invention passes through the nut to the desired height.

[0026] Figure 10 : Perspective view of the fixing pin being inserted into the clamping space.

[0027] Figure 11 : Perspective view of the fixing pin having been inserted into the clamping space.

[0028] Figure 12 : Top view of the fixing pin having been inserted into the clamping space.

[0029] Figure 13 : Top view schematic diagram of three first concave grooves equally spaced on the screw of the present invention and three second concave grooves equally spaced on the nut.

[0030] Figure 14 : Figure 13 Top view of the fixing pin having been inserted into the clamping space in the illustrated embodiment.

[0031] Figure 15 : Perspective view of the first thread section on the screw of the present invention being spaced intermittently.

[0032] Figure 16: Three-dimensional exploded view of the head of the screw of the present invention with a perforation for the fixing pin to pass through.

[0033] Figure 17 : Three-dimensional assembled view of the head of the screw of the present invention with a perforation for the fixing pin to pass through.

[0034] In the figure:

[0035] 1. Screw; 11. Head; 111. Perforation; 12. Rod body; 13. First concave groove; 14. Circumferential surface; 15. First thread section; 151. First peak; 152. First valley; 2. Nut; 21. Inner ring surface; 22. Second concave groove; 23. Second thread section; 231. Second peak; 232. Second valley; A. Latching space; 3. Positioning piece; 31. First side; 32. Second side; 33. Third side; 321. Protrusion; 331. Protrusion; 322. Hole; 332. Hole; 4. Fixing pin. Detailed implementation mode

[0036] To disclose the technical content, invention purpose and achieved effects of the present invention more completely and clearly, the following is a detailed description, and please also refer to the attached drawings and figure numbers:

[0037] Please refer to Figure 1 , Figure 10 .

[0038] The screw fixing assembly of the present invention includes a screw 1, a nut 2 and a fixing pin 4;

[0039] The screw 1 has a head 11 and a rod body 12 connected to the bottom surface of the head 11. At least one first concave groove 13 is provided along the axial direction of the rod body 12 on the circumferential surface 14 of the rod body 12. In the present invention, Figure 1 , Figure 10 , two first concave grooves 13 are taken as an example for illustration. The two first concave grooves 13 are arranged at equal angular intervals (please refer to Figure 4 ). A first thread section 15 is formed on the circumferential surface 14 between the two first concave grooves 13 of the rod body 12. The first thread section 15 includes a first peak 151 and a first valley 152;

[0040] The nut 2 has at least one second concave groove 22 provided along the axial direction of the nut 2 on the inner ring surface 21. In the present invention, Figure 1 , Figure 10 , two second concave grooves 22 are taken as an example for illustration. The two second concave grooves 22 are arranged at equal angular intervals (please refer to Figure 4), a second thread section 23 is formed between two second grooves 22 on the inner ring surface 21 of the nut 2. The second thread section 23 includes a second peak 231 and a second valley 232. The second thread section 23 is engaged with the first thread section 15 by screwing. The first groove 13 corresponds to the second groove 22 and they jointly form a clamping space A (please refer to Figure 12 );

[0041] The fixing pin 4 is a round rod body and is used to be inserted into the clamping space A (please refer to Figures 10 to 12 ).

[0042] The screw-fixing assembly of the present invention may further include a positioning piece 3 (please refer to Figure 8 together). The positioning piece 3 includes a first side 31, a second side 32, and a third side 33. The two ends of the first side 31 are respectively connected to the second side 32 and the third side 33, making the positioning piece 3 a horseshoe-shaped sheet body. The inner edges of the second side 32 and the third side 33 facing each other respectively protrude inward to form protrusions 321 and 331, and the protrusions 321 and 331 are adapted to the first groove 13. Moreover, the distance between the inner edges of the second side 32 and the third side 33 facing each other is smaller than the outer diameter of the first peak 151 of the first thread section 15, and the distance between the inner edges of the second side 32 and the third side 33 facing each other matches the inner diameter of the first valley 152 of the first thread section 15.

[0043] During implementation, please refer to Figures 2 to 12 . First, a plurality of screw rods 1 are respectively preliminarily inserted into the nuts 2 (please refer to Figures 2 to 4 ). Since the first thread section 15 of the screw rod 1 corresponds to the inner ring surface 21 (i.e., the second groove 22) of the nut 2 where no thread is provided, and the circumferential surface 14 (i.e., the first groove 13) of the screw rod 1 where no thread is provided corresponds to the second thread section 23 of the nut 2, the screw rod 1 can move up and down quickly in the nut 2 without being blocked until the screw rod 1 reaches the required height for locking. Then, the screw rod 1 is screwed, so that the first thread section 15 of the screw rod 1 is engaged with the second thread section 23 of the nut 2 by screwing, and the locking and fixing of the screw rod 1 and the nut 2 are quickly completed. Of course, it is also possible to further insert the positioning piece 3 into the first valley 152 of the first thread section 15 of the screw rod 1 located above the nut 2 after the screw rod 1 is inserted into the nut 2 and reaches the required height for locking (please refer to Figures 5 to 8), After the convex portions 321 and 331 of the positioning piece 3 are respectively engaged into the two first concave grooves 13 on the rod body 12 of the screw rod 1, the positioning piece 3 will be positioned on the screw rod 1. At this time, even if the screw rod 1 is released, since the bottom surfaces of the first side 31 to the third side 33 of the positioning piece 3 abut against the top surface of the nut 2, the screw rod 1 is supported by the positioning piece 3 and will not fall. After all the screw rods 1 are roughly inserted into the respective nuts 2 with appropriate lengths, then while removing the positioning piece 3 one by one, the screw rod 1 is screwed into the nut 2 to lock and position, and the fixing pin 4 is inserted into the locking space A formed by the joint of the first concave groove 13 and the second concave groove 22 (please refer to Figures 10 to 12 ), quickly complete the locking and fixing of the screw rod 1 and the nut 2. Of course, it can also be as shown in Figure 9 , insert the positioning piece 3 from the first valley 152 of the first threaded section 15 of the screw rod 1 located below the nut 2, so that the top surfaces of the first side 31 to the third side 33 of the positioning piece 3 abut against the bottom end surface of the nut 2, and the same effect of combining and initially fixing the screw rod 1 and the nut 2 at the desired height can be achieved. In addition, for the convenience of removing the positioning piece 3, holes 322 and 332 can be further provided on the convex portions 321 and 331 of the positioning piece 3, which is convenient for inserting tools into the holes 322 and 332 to force the convex portion 321 to disengage from the first concave groove 13 of the screw rod 1.

[0044] Please refer to again Figures 13 to 14 , for another embodiment of the present invention, its structure is generally the same as that of the embodiment in Figures 1 to 12 , the difference is only that there are three first concave grooves 13 provided on the rod body 12 of the screw rod 1 in this embodiment, and a first threaded section 15 is provided between two adjacent first concave grooves 13; and three second concave grooves 22 are provided on the inner ring surface 21 of the nut 2, and a second threaded section 23 is provided between two adjacent second concave grooves 22, and it can also achieve the implementation manner as in Figures 1 to 12 .

[0045] In addition, the first threaded section 15 on the rod body 12 of the screw rod 1 can be continuously provided at the same angular position as shown in Figure 1 , or can be intermittently provided at intervals at the same angular position as shown in Figure 15 .

[0046] Please refer to Figures 16 to 17 , a through hole 111 penetrating the head 11 is provided on the head 11 of the screw rod 1, and the through hole 111 corresponds to the first concave groove 13. After the screw rod 1 and the nut 2 are locked, the fixing pin 4 is inserted from the through hole 111 into the locking space A formed by the joint of the first concave groove 13 and the second concave groove 22.

Claims

1. A screw fixing component, characterized in that, It includes a screw rod, a nut, a fixing pin and a positioning piece; The screw rod has a head and a rod body connected to the bottom surface of the head. At least one first concave groove is axially provided on the circumferential surface of the rod body. At least one first thread segment is formed on the circumferential surface where the first concave groove is not provided. The first thread segment includes a first peak and a first valley; At least one second concave groove is axially provided on the inner circumferential surface of the nut. At least one second thread segment is formed on the inner circumferential surface where the second concave groove is not provided. The second thread segment includes a second peak and a second valley. The second thread segment is engaged and locked with the first thread segment. The second concave groove corresponds to the first concave groove and jointly forms a clamping space; The fixing pin is a round rod body and is used to be embedded in the clamping space; The positioning piece includes a first side, a second side and a third side. The two ends of the first side are respectively connected to the second side and the third side. The positioning piece is a horseshoe-shaped sheet body. The inner edges of the second side and the third side facing each other respectively protrude inwards to form convex parts. The convex parts are adapted to the first concave groove. The distance between the inner edges of the second side and the third side facing each other is less than the outer diameter of the first peak of the first thread segment. The distance between the inner edges of the second side and the third side facing each other matches the inner diameter of the first valley of the first thread segment.

2. The screw fixing assembly according to claim 1, characterized in that, Two first concave grooves are equally spaced on the circumferential surface of the rod body of the screw rod. The first thread segment is formed on the circumferential surface between the two first concave grooves. The two first thread segments are equally spaced. Two second concave grooves are correspondingly and equally spaced on the inner circumferential surface of the nut. The second thread segment is formed on the inner circumferential surface between the two second concave grooves. The two second thread segments are equally spaced.

3. The screw fixing assembly according to claim 2, characterized in that Holes are provided on the convex part of the second side and the convex part of the third side.

4. The screw fixing assembly according to claim 3, characterized in that A through hole is provided in the head of the screw rod, and the through hole corresponds to the first concave groove.

5. The screw fastening assembly according to claim 2, wherein, A through hole is provided in the head of the screw rod, and the through hole corresponds to the first concave groove.

6. The screw fixing component according to claim 1, wherein, Three first concave grooves are equally spaced on the circumferential surface of the rod body of the screw rod. The first thread segment is formed on the circumferential surface between two adjacent first concave grooves. The three first thread segments are equally spaced. Three second concave grooves are correspondingly and equally spaced on the inner circumferential surface of the nut. The second thread segment is formed on the inner circumferential surface between two adjacent second concave grooves. The three second thread segments are equally spaced.

7. The screw fixing assembly according to claim 6, wherein Holes are provided on the convex part of the second side and the convex part of the third side.

8. The screw fixing assembly according to claim 7, wherein A through hole is provided in the head of the screw rod, and the through hole corresponds to the first concave groove.

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